CTA for suspected lower GI bleeding

Some additional information about the superiority of CTA over radiolabelled RBCs for the detection of the site of bleeding in lower GI haemorrhage has been added to the Lower intestinal haemorrhage page.

Feuerstein, JD, Ketwaroo, G, Tewani, SK, et al. Localizing Acute Lower Gastrointestinal Hemorrhage: CT Angiography Versus Tagged RBC Scintigraphy. AJR Am J Roentgenol 2016;207(3):578-84.